I have very little cash and yet he says that I had a good year with $15,000 net income. He said it was because we use accrual accounting (whatever that means). I know I paid 6 month’s rent ($1,400 a month) in advance at the end of the year. I also paid my insurance for the next year. Insurance cost $6,000. I have several customers who had a lot of services done on credit and haven’t paid yet. I think that totals $11,948 owed to me. Can you explain?